Suction muffler for compressor

ABSTRACT

Disclosed is a suction muffler for a compressor, which effectively separates liquid components and oil components from a refrigerant, thereby reducing noise generated due to the suction of the refrigerant by the compressor and improving the performance of the compressor. The suction muffler includes a main body, to which a suction pipe of the compressor is connected; a refrigerant inflow chamber formed in the main body for allowing a refrigerant transmitted from the suction pipe to flow from the upper portion thereof to the lower portion thereof; a refrigerant outflow pipe for connecting a compression chamber of the compressor and the refrigerant inflow chamber; a resonance chamber formed in the main body such that the resonance chamber is divided from the refrigerant inflow chamber; a partition unit for dividing the resonance chamber and the refrigerant inflow chamber; and a communication portion formed through the partition unit for communicating the refrigerant inflow chamber and the resonance chamber.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of Korean Patent Application No.2004-69542, filed Sep. 1, 2004, in the Korean Intellectual PropertyOffice, the disclosure of which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a suction muffler for a compressor, andmore particularly, to a suction muffler for a compressor, whichefficiently separates liquid components and oil components from arefrigerant to reduce noise generated due to the suction of therefrigerant by means of the compressor and to improve the performance ofthe compressor.

2. Description of the Related Art

Generally, a refrigerating cycle employed by a refrigerator or an airconditioner is performed through a closed circuit including a compressorfor sucking a refrigerant in a low pressure state, compressing therefrigerant, and discharging the refrigerant in a high pressure state, acondenser for condensing the refrigerant discharged from the compressor,an expansion device for expanding the refrigerant condensed by thecondenser, an evaporator for evaporating the refrigerant expanded by theexpansion device so that the refrigerant exchanges heat with surroundingair, and refrigerant pipes for connecting the above components.

The compressor includes a compressing unit for compressing therefrigerant, a driving unit for providing compression power due to thecompression of the refrigerant, an airtight container for hermeticallysealing the compressing unit and the driving unit, a suction pipe forguiding an external refrigerant to the inside of the airtight container,and a discharge pipe for discharging the refrigerant compressed by thecompressing unit to the outside of the airtight container.

The compressing unit includes a cylinder block in which a compressionchamber is formed so that the refrigerant is compressed in thecompression chamber, a piston for compressing the refrigerant in thecompression chamber, a cylinder head connected to one side of thecylinder block for hermetically sealing the compression chamber andprovided with a refrigerant discharge chamber and a refrigerant suctionchamber which are divided from each other, and a valve device formedbetween the cylinder block and the cylinder head for intermitting theflow of the refrigerant sucked to the compression chamber or dischargedfrom the compression chamber.

A suction muffler for reducing noise generated from the flow of therefrigerant sucked into the compression chamber is installed between thecompression chamber and the suction pipe of the compressor.

The suction muffler includes a main body, to which the suction pipe isconnected, forming a designated resonance space therein for reducing thenoise generated from the flow of the refrigerant, and a refrigerantoutflow pipe connected to the main body to connect the inside of themain body and the refrigerant suction chamber of the cylinder head sothat the refrigerant introduced into the main body is transmitted to thecompression chamber.

The refrigerant, introduced from the suction pipe to the inside of themain body of the suction muffler when the compressor performs a suctionoperation, is transmitted to the refrigerant suction chamber of thecylinder head along the refrigerant outflow pipe under the conditionthat the noise generated due to the flow of the refrigerant is reducedwhen the refrigerant passes through the inside of the suction mufflerforming the resonance space and is then transmitted to the compressorchamber, and the refrigerant transmitted to the compression chamber ispressed by the piston and discharged to the outside of the compressorthrough the discharge pipe.

Since the suction muffler of the conventional compressor comprises themain body forming one resonance space therein, large quantities ofliquid components or oil components contained in the refrigeranttransmitted to the inside of the main body through the suction pipe areintroduced together with gaseous components of the refrigerant to theinside of the refrigerant outflow pipe. Accordingly, when the mixedfluid of liquid and gaseous components is transmitted to the refrigerantsuction chamber through the refrigerant outflow pipe, noise generateddue to the suction of the refrigerant is increased, and the liquidcomponents of the refrigerant are transmitted to the inside of thecompressor chamber, thereby deteriorating the performance of thecompressor.

SUMMARY OF THE INVENTION

Therefore, one aspect of the invention is to provide a suction mufflerfor a compressor, which efficiently separates liquid components and oilcomponents from a refrigerant to reduce noise generated due to thesuction of the refrigerant and to improve the performance of thecompressor.

In accordance with one aspect, the present invention provides a suctionmuffler for a compressor comprising: a main body, to which a suctionpipe of the compressor is connected; a refrigerant inflow chamber formedin the main body for allowing a refrigerant transmitted from the suctionpipe to flow from the upper portion thereof to the lower portionthereof; a refrigerant outflow pipe for connecting a compression chamberof the compressor and the refrigerant inflow chamber; a resonancechamber formed in the main body such that the resonance chamber isdivided from the refrigerant inflow chamber; a partition unit fordividing the resonance chamber and the refrigerant inflow chamber; and acommunication portion formed through the partition unit forcommunicating the refrigerant inflow chamber and the resonance chamber.

Preferably, the refrigerant inflow chamber includes a guide chamber forforming the lower portion of the refrigerant inflow chamber and guidingthe refrigerant flowing to the lower portion of the refrigerant inflowchamber to the inside of the refrigerant outflow pipe, and thecommunication portion is formed through a portion of the partition unitabove the guide chamber.

Further, preferably, the partition unit includes an upper partitionmember extended downwardly from the inner surface of the upper portionof the main body and a lower partition member extended upwardly from theinner surface of the lower portion of the main body, and thecommunication portion is formed between the upper and lower partitionmembers.

Preferably, the upper partition member and the lower partition memberare separated from each other under the condition that the upper andlower partition members cross each other, and the end of the lowerpartition member is located closer to the refrigerant inflow chamberthan the end of the upper partition member.

Further, preferably, a subsidiary communication portion forcommunicating the refrigerant inflow chamber and the resonance chamberis formed between the main body and the lower partition member close tothe guide chamber.

Moreover, preferably, the subsidiary communication portion is formed inthe longitudinal direction of the lower partition member so that thesubsidiary communication portion is communicated with the communicationportion.

Preferably, a first discharge hole for discharging liquid components andoil components contained in the refrigerant to the outside of the mainbody is formed through the main body at a portion in which the resonancechamber is formed.

Further, preferably, a second discharge hole for discharging the liquidcomponents and the oil components contained in the refrigerant to theoutside of the main body is formed through the main body at a portion inwhich the guide chamber is formed.

BRIEF DESCRIPTION OF THE DRAWINGS

These and/or other aspects and advantages of the invention will becomeapparent and more readily appreciated from the following description ofthe embodiments, taken in conjunction with the accompanying drawings inwhich:

FIG. 1 is a sectional view illustrating the overall structure of acompressor in accordance with the present invention;

FIG. 2 is a sectional view illustrating the structure of a suctionmuffler for a compressor in accordance with a first embodiment of thepresent invention;

FIG. 3 is a sectional view illustrating the structure of a suctionmuffler for a compressor in accordance with a second embodiment of thepresent invention; and

FIG. 4 is a sectional view illustrating the structure of a suctionmuffler for a compressor in accordance with a third embodiment of thepresent invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the embodiments of the presentinvention, an example of which is illustrated in the accompanyingdrawings, wherein like reference numerals refer to like elementsthroughout. The embodiments are described below to explain the presentinvention by referring to the annexed drawings.

A compressor of the present invention, as shown in FIG. 1, comprises anairtight container 1 formed by the connection of an upper container 1 aand a lower container 1 b, a compressing unit 10 prepared in theairtight container 1 for compressing a refrigerant, a driving unit 20for providing compression power due to the compression of therefrigerant, a suction pipe 2 installed at one side of the airtightcontainer 1 for guiding an external refrigerant to the inside of theairtight container 1, and a discharge pipe 3 installed at the other sideof the airtight container 1 for discharging the refrigerant compressedby the compressing unit 10 to the outside of the airtight container 1.

The compressing unit 10 includes a cylinder block 11 in which acompression chamber 11 a is formed so that the refrigerant in thecompression chamber 11 a is compressed, a piston 12 rectilinearlyreciprocating in the compression chamber 11 a for compressing therefrigerant, a cylinder head 13 connected to one side of the cylinderblock 11 for hermetically sealing the compression chamber 11 a andprovided with a refrigerant discharge chamber 13 a and a refrigerantsuction chamber 13 b, which are divided from each other, and a valvedevice 14 formed between the cylinder block 11 and the cylinder head 13for intermitting the flow of the refrigerant sucked from the refrigerantsuction chamber 13 b to the compression chamber 11 a or discharged fromthe compression chamber 11 a to the refrigerant discharge chamber 13 a.

The driving unit 20 provides driving force for reciprocating the piston12 in the compression chamber 11 a, and includes a stator 21 fixed inthe airtight container 1 and a rotor 22 installed in the stator 21 suchthat the rotor 22 is separated from the inner wall of the stator 21 andelectromagnetically interacting with the stator 21. A rotary shaft 23 isinstalled in the center of the rotor 22 so that the rotary shaft 23 isrotated together with the rotation of the rotor 22, and an eccentricunit 24 eccentrically rotated and a connecting rod 25 for converting theeccentric rotation of the eccentric unit 24 to the rectilinear movementare installed on the upper surface of the rotary shaft 23. Here, one endof the connecting rod 25 is connected to the eccentric unit 24 such thatthe end can be rotated, and the other end of the connecting rod 25 isinstalled in the piston 12 such that the end can be rotated andrectilinearly moved.

A suction muffler 30 for reducing noise generated due to the flow of therefrigerant sucked from the suction pipe 2 to the compression chamber 11a is installed between the compression chamber 11 a and the suction pipe2. The suction muffler 30, as shown in FIGS. 1 and 2, includes a mainbody 40 having a refrigerant inflow pipe 41 to which the suction pipe 2is connected to form a refrigerant inflow channel 50, a first body 42for forming a refrigerant inflow chamber 60 provided with an inner spacedirectly communicated with the refrigerant inflow channel 50, and asecond body 43 separated from the refrigerant inflow channel 50 by adesignated interval for forming a resonance chamber 70 divided from therefrigerant inflow chamber 60. Here, the refrigerant inflow pipe 41, thefirst body 42, and the second body 43 are integrally formed.

The suction pipe 2 is connected to the inlet of the refrigerant inflowpipe 41, the outlet of the refrigerant inflow pipe 41, also serving asthe inlet of the refrigerant inflow chamber 60, is located on one sidesurface of the upper portion of the refrigerant inflow chamber 60, and arefrigerant outflow pipe 80 for connecting the inside of the refrigerantinflow chamber 60 and the refrigerant suction chamber 13 b of thecylinder head 13 is installed in the refrigerant inflow chamber 60 sothat the refrigerant transmitted to the refrigerant inflow chamber 60through the refrigerant inflow pipe 41 is transmitted to the compressionchamber 11 a. Here, the outlet of the refrigerant outflow pipe 80 isextended to the upper portion of the first body 42 and connected to therefrigerant suction chamber 13 b of the cylinder head 13, and the lowerportion of the refrigerant outflow pipe 80 provided with the inletthereof passes through the inlet of the refrigerant inflow pipe 41 andis extended to the lower portion of the inside of the refrigerant inflowchamber 60 by a designated distance.

A partition unit 90 for dividing the resonance chamber 70 and therefrigerant inflow chamber 60 is installed between the resonance chamber70 and the refrigerant inflow chamber 60 in the main body 40 in thelongitudinal direction of the main body 40. Through the partition unit90, the refrigerant introduced from the refrigerant inflow pipe 41 tothe refrigerant inflow chamber 60 flows from the upper portion of therefrigerant inflow chamber 60 to the lower portion of the refrigerantinflow chamber 60 along the inner surface of the refrigerant inflowchamber 60.

The refrigerant inflow chamber 60 includes a guide chamber 61 forforming the lower portion of the refrigerant inflow chamber 60 andguiding the refrigerant from the lower portion of the refrigerant inflowchamber 60 to the inside of the refrigerant outflow pipe 80. The guidechamber 61 has an approximately hemispherical shape from the lower endof the first body 42 having a downwardly convex shape, and therefrigerant, which flows from the upper portion of the refrigerantinflow chamber 60 to the lower portion of the refrigerant inflow chamber60 along the inner surface of the refrigerant inflow chamber 60 throughthe above shape of the guide member 61, is guided by the guide chamber61 and introduced to the inlet of the refrigerant outflow pipe 80.

A communication portion 91 for communicating the resonance chamber 70and the refrigerating inflow chamber 60 is formed through a designatedportion of the partition unit 90 above the guide chamber 61. Thecommunication portion 91 serves to introduce a part of the refrigerantinto the resonance chamber 70 before the refrigerant, introduced intothe refrigerant inflow chamber 60 and flown from the upper portion ofthe refrigerant inflow chamber 60 to the lower portion of therefrigerant inflow chamber 60 along the inner surface of the refrigerantinflow chamber 60, is guided by the guide chamber 61. Liquid componentsand oil components of the refrigerant introduced into the resonancechamber 70 are collected in the resonance chamber 70, and gaseouscomponents of the refrigerant introduced into the resonance chamber 70are transmitted again to the refrigerant inflow chamber 60 through thecommunication portion 91, are guided together with the refrigerant,which is not introduced into the resonance chamber 70, by the guidechamber 61, and are introduced into the refrigerant outflow pipe 80.Thereby, considerable amounts of the liquid components and the oilcomponents out of the refrigerant initially introduced into therefrigerant inflow chamber 60 are collected in the resonance chamber 70.In order to discharge the liquid components and the oil componentscollected in the resonance chamber 70 to the outside, a first dischargehole 43 a is formed through the lower surface of the second body 43.Further, in order to discharge designated amounts of the liquidcomponents and the oil components out of the refrigerant to the outsidethrough the refrigerant inflow chamber 60, a second discharge hole 42 ais formed through the guide chamber 61, i.e., the first body 42.

The partition unit 90 includes an upper partition member 92 extendeddownwardly from the inner surface of the upper portion of the main body40, and a lower partition member 93 extended upwardly from the innersurface of the lower portion of the main body 40. The communicationportion 91 is formed by a separation space between the upper partitionmember 92 and the lower partition member 93.

FIG. 3 illustrates a partition unit 90′ of a suction muffler for acompressor in accordance with another embodiment of the presentinvention. In this embodiment, a larger amount of liquid and oilcomponents than that of the first embodiment can be separated from therefrigerant and collected in the resonance chamber 70 of the suctionmuffler 30.

That is, as shown in FIG. 3, in the suction muffler 30 in accordancewith another embodiment of the present invention, the partition unit 90′includes an upper partition member 92′ extended downwardly from theinner surface of the upper portion of the main body 40, and a lowerpartition member 93′ extended upwardly from the inner surface of thelower portion of the main body 40. Here, the upper partition member 92′and the lower partition member 93′ are separated from each other underthe condition that the upper and lower partition members 92′ and 93′partially cross each other, and a communication portion 91′ is formedbetween ends of the crossing upper and lower partition members 92′ and93′. The end of the lower partition member 93′ is located closer to therefrigerant inflow chamber 60 than the end of the upper partition member92′. Accordingly, most of the refrigerant flowing to the lower portionof the refrigerant inflow chamber 60 along the inner surface of therefrigerant inflow chamber 60 above the communication portion 91′ iscaught by the end of the lower partition member 93′, and is introducedinto the resonance chamber 70. Thereby, larger amounts of the liquidcomponents and the oil components are collected in the resonance chamber70 of the main body 40.

In this case, since most of the refrigerant passes through thecommunication portion 91′ before the refrigerant is guided to the guidechamber 61, the fluidity of the refrigerant is deteriorated and thesupply speed of the refrigerant to the compression chamber 11 a isslowed. In consideration of the above aspect, the partition unit of thesuction muffler 30 may be formed as shown in FIG. 4.

That is, as shown in FIG. 4, in the suction muffler 30 in accordancewith yet another embodiment of the present invention, a partition unit90″ includes an upper partition member 92″ extended downwardly from theinner surface of the upper portion of the main body 40, and a lowerpartition member 93″ extended upwardly from the inner surface of thelower portion of the main body 40. Here, the upper partition member 92″and the lower partition member 93″ are separated from each other in thelongitudinal direction of the main body 40, and a communication portion91″ is formed by the separation space between the upper and lowerpartition members 92″ and 93″.

In the partition unit 90″, one end of the lower partition member 93″close to the guide chamber 61 is separated from the inner surface of themain body 40 by a designated interval so that a subsidiary communicationportion 94 for communicating the refrigerant inflow chamber 60 and theresonance chamber 70 is formed between the end of the lower partitionmember 93″ and the inner surface of the main body 40.

Accordingly, a smaller amount of the refrigerant in this embodiment thanthat of the refrigerant in the second embodiment flows from the upperportion of the refrigerant inflow chamber 60 to the lower portion of therefrigerant inflow chamber 60 along the inner surface of the refrigerantinflow chamber 60 and is collected in the resonance chamber 70, and thesupply speed of the refrigerant to the compression chamber 11 a isincreased. Designated amounts of the liquid components and oilcomponents out of the refrigerant, which is not introduced into theresonance chamber 70 through the communication portion 90″ and isdirectly guided to the guide chamber 61, are guided to the guide chamber61 and are simultaneously collected in the resonance chamber 70 throughthe subsidiary communication portion 94. Thereby, larger amounts of theliquid components and the oil components in this embodiment than thosein the first embodiment are collected in the resonance chamber 70 of themain body 40.

The subsidiary communication portion 94, as shown in FIG. 4, may beformed in the longitudinal direction of the lower partition member 93″such that the subsidiary communication portion 94 is communicated withthe communication portion 91″. Here, a designated amount of therefrigerant, which passes through the communication portion 90″ beforeintroduction into the guide chamber 61 as well as the refrigerantintroduced into the guide chamber 61 is collected in the resonancechamber 70 through the upper portion of the subsidiary communicationportion 94.

Hereinafter, the operation and function of a compressor having themuffler of the present invention will be described in detail.

When the rotary shaft 23 is rotated together with the rotation of therotor 22 by the electrical interaction between the stator 21 and therotor 22 due to the application of power, the piston 22 connected to theeccentric unit 24 by the connecting rod 25 rectilinearly reciprocates inthe compression chamber 11 a. Thereby, the refrigerant outside theairtight container 1 flows from the suction pipe 2 to the suctionmuffler 30, is introduced into the refrigerant suction chamber 13 b ofthe cylinder head 13 under the condition that the noise generated due tothe flow of the refrigerant is decreased, and is transmitted to thecompression chamber 11 a so that the refrigerant is compressed in thecompression chamber 11 a. The refrigerant compressed in the compressionchamber 11 a is discharged again to the refrigerant discharge chamber 13a of the cylinder head 13, and is discharged to the outside of theairtight container 1 through the discharge pipe 3. The above procedureis repeated, thus performing the compression of the refrigerant usingthe compressor.

During the above compression of the refrigerant using the compressor,liquid components and oil components are separated from the refrigerantand collected in the resonance chamber 70 in the main body 40 of thesuction muffler 30 having the partition unit 90, 90′, or 90″ and thecommunication portion 91, 91′, and 91″. First, the separation of therefrigerant using the suction muffler 30 in accordance with the firstembodiment of the present invention will be described, as follows.

As shown in FIG. 2, a part of the refrigerant, which is introduced fromthe suction pipe 2 to the refrigerant inflow chamber 60 and flows fromthe upper portion to the lower portion of the refrigerant inflow chamber60 along the inner surface of the refrigerant inflow chamber 60, isintroduced into the resonance chamber 70 through the communicationportion 91 formed through the partition unit 90 for communicating therefrigerant inflow chamber 60 and the resonance chamber 70 before therefrigerant is guided to the guide chamber 61. Liquid components and oilcomponents out of the refrigerant introduced into the resonance chamber70 are collected in the resonance chamber 70, and gaseous components ofthe refrigerant introduced into the resonance chamber 70 are introducedagain into the refrigerant inflow chamber 60 through the communicationportion 91, guided to the guide chamber 61 together with therefrigerant, which is not introduced into the resonance chamber 70, andintroduced into the refrigerant outflow pipe 80. Thereby, considerableamounts of the liquid components and the oil components are separatedfrom the refrigerant, which is initially introduced into the refrigerantinflow chamber 60, and are collected in the resonance chamber 70. Here,the liquid components and the oil components collected in the resonancechamber 70 are discharged to the outside of the main body 40 through thefirst discharge hole 43 a. Further, designated amounts of the liquidcomponents and the oil components are also discharged to the outside ofthe main body 40 through the second discharge hole 42 a formed throughthe lower surface of the guide chamber 61 of the refrigerant inflowchamber 60.

Next, the separation of the refrigerant using the suction muffler 30 inaccordance with the second embodiment of the present invention will bedescribed, as follows. As shown in FIG. 3, most of the refrigerantflowing to the lower portion of the refrigerant inflow chamber 60 alongthe inner surface of the refrigerant inflow chamber 60 above thecommunication portion 91′ is caught by the lower end of the lowerpartition member 93′ close to the communication portion 91′, and isintroduced into the resonance chamber 70. Accordingly, the suctionmuffler of this embodiment separates larger amounts of the liquidcomponents and the oil components from the refrigerant than those of thefirst embodiment.

Further, as shown in FIG. 4, the suction muffler 30, in accordance withthe third embodiment of the present invention, separates the liquidcomponents and the oil components from the refrigerant having a smalleramount than that of the second embodiment and flowing from the upperportion to the lower portion of the refrigerant inflow chamber 60 alongthe inner surface of the refrigerant inflow chamber 60, and has a fastersupply speed of the refrigerant to the compression chamber 11 a thanthat of the second embodiment. Further, since designated amounts of theliquid components and the oil components out of the refrigerant, whichis not introduced into the resonance chamber 70 through thecommunication portion 91″ and is directly guided to the guide chamber61, are guided to the guide chamber 61 through the subsidiarycommunication portion 94 and are simultaneously collected in theresonance chamber 70, the suction muffler of this embodiment separateslarger amounts of the liquid components and the oil components from therefrigerant than those of the first embodiment.

Consequently, the suction muffler 30 in accordance with one of the firstto third embodiments effectively prevents the liquid components and theoil components contained in the refrigerant transmitted from the suctionpipe 2 to the inside of the suction muffler 30 from being transmittedtogether with the gaseous components of the refrigerant to thecompression chamber 11 a.

As apparent from the above description, the present invention provides asuction muffler for a compressor, which has a partition unit and acommunication portion for effectively preventing liquid and oilcomponents contained in a refrigerant from being transmitted togetherwith gaseous components of the refrigerant to a compression chamber,thereby reducing noise generated due to the suction of the refrigerantby means of the compressor and improving the performance of thecompressor.

Although embodiments of the invention have been shown and described, itwould be appreciated by those skilled in the art that changes may bemade in these embodiments without departing from the principles andspirit of the invention, the scope of which is defined in the claims andtheir equivalents.

1. A suction muffler for a compressor comprising: a main body, to whicha suction pipe of the compressor is connected; a refrigerant inflowchamber formed in the main body for allowing a refrigerant transmittedfrom the suction pipe to flow from the upper portion thereof to thelower portion thereof; a refrigerant outflow pipe for connecting acompression chamber of the compressor and the refrigerant inflowchamber; a resonance chamber formed in the main body such that theresonance chamber is divided from the refrigerant inflow chamber; apartition unit for dividing the resonance chamber and the refrigerantinflow chamber; and a communication portion formed through the partitionunit for communicating the refrigerant inflow chamber and the resonancechamber.
 2. The suction muffler as set forth in claim 1, wherein therefrigerant inflow chamber includes a guide chamber for forming thelower portion of the refrigerant inflow chamber and guiding therefrigerant flowing to the lower portion of the refrigerant inflowchamber to the inside of the refrigerant outflow pipe, and thecommunication portion is formed through a portion of the partition unitabove the guide chamber.
 3. The suction muffler as set forth in claim 2,wherein the partition unit includes an upper partition member extendeddownwardly from the inner surface of the upper portion of the main bodyand a lower partition member extended upwardly from the inner surface ofthe lower portion of the main body, and the communication portion isformed between the upper and lower partition members.
 4. The suctionmuffler as set forth in claim 3, wherein the upper partition member andthe lower partition member are separated from each other under thecondition that the upper and lower partition members cross each other,and the end of the lower partition member is located closer to therefrigerant inflow chamber than the end of the upper partition member.5. The suction muffler as set forth in claim 3, wherein a subsidiarycommunication portion for communicating the refrigerant inflow chamberand the resonance chamber is formed between the main body and a portionof the lower partition member close to the guide chamber.
 6. The suctionmuffler as set forth in claim 5, wherein the subsidiary communicationportion is formed in the longitudinal direction of the lower partitionmember so that the subsidiary communication portion is communicated withthe communication portion.
 7. The suction muffler as set forth in claim1, wherein a first discharge hole for discharging liquid components andoil components contained in the refrigerant to the outside of the mainbody is formed through the main body at a portion in which the resonancechamber is formed.
 8. The suction muffler as set forth in claim 7,wherein a second discharge hole for discharging the liquid componentsand the oil components contained in the refrigerant to the outside ofthe main body is formed through the main body at a portion in which theguide chamber is formed.